public function destroy_action()
{
if ($this->_validate()) {
require_once UNOSLIDER_BASE . '/application/models/unoslider_presets.php';
$model = new Unoslider_Presets_Model();
$model->delete($_POST['id']);
$response = json_encode(array('success' => true));
header("Content-Type: application/json");
echo $response;
}
exit;
}